Diethyl phosphite
亚磷酸二乙酯
Also known as: Diethyl phosphonate, Phosphonic acid diethyl ester, Diethyl hydrogen phosphite, Diethoxyphosphine oxide, Ethyl phosphonate ((EtO)2HPO)
Diethyl phosphite (CAS 762-04-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H11O3P and a molecular weight of 138.10200 g/mol. It is also known as Diethyl phosphonate, Phosphonic acid diethyl ester and Diethyl hydrogen phosphite. Key properties include a melting point of -70 °C, a boiling point of 50-51 °C2 mm Hg(lit.), a density of 1.072 g/mL at 25 °C(lit.) and a flash point of 180 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 762-04-9
- Jingsj CID
- J-3247-6
- Molecular Formula
- C4H11O3P
- Chinese Name
- 亚磷酸二乙酯
- Molecular Weight
- 138.10200 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -70 °C |
|---|---|
| Boiling Point | 50-51 °C2 mm Hg(lit.) |
| Density | 1.072 g/mL at 25 °C(lit.) |
| Flash Point | 180 °F |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Diethyl phosphite?
The CAS number of Diethyl phosphite is 762-04-9.
What are the molecular formula and molecular weight of Diethyl phosphite?
Diethyl phosphite has molecular formula C4H11O3P and molecular weight 138.10200 g/mol.
Is Diethyl phosphite hazardous?
Diethyl phosphite has GHS signal word Warning.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diethyl phosphite (CAS 762-04-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3247-6 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.